import asyncio
from starlette.concurrency import run_in_threadpool
from datetime import datetime
import pytz

# 查看默认最大线程数（通常为 40）
# print(asyncio.get_event_loop()._max_workers)  # 输出默认线程池大小

SH_TZ = pytz.timezone("Asia/Shanghai")

print(datetime.fromtimestamp(0, tz=SH_TZ))
print(datetime.fromtimestamp(0))
